Finding the Third Proportional to 2,122,785 and 4,485,170

Step by Step Solution

1. Step 1: Write the proportion equation
   2,122,785 : 4,485,170 = 4,485,170 : x
2. Step 2: Convert to fraction form
   2,122,785/4,485,170 = 4,485,170/x
3. Step 3: Cross multiply
   2,122,785x = 4,485,170 × 4,485,170
4. Step 4: Simplify right side
   2,122,785x = 20,116,749,928,900
5. Step 5: Solve for x
   x = 20,116,749,928,900/2,122,785
6. Step 6: Final answer
   x = 9,476,583.79